That’s following the retirement of Michael Carrick and the uncertain future of Marouane Fellaini.

Manchester United supremo Ed Woodward wants to wrap up the deal for Fred before the World Cup starts in two weeks time.

Starsport understand Mourinho is also in talks with Tottenham over defender Toby Alderweireld.

United are keen to get as much of their business done before the World Cup as they can with the transfer window shutting earlier than usual.

Aston Villa ace Grealish scored three goals and provided six assists to his team-mates in the Championship this season.

United are set to be busy this summer with Sky Sports pundit Charlie Nicholas predicting four players could leave the club quickly.

He said: “I really do think this is about who Jose is going to sell rather than buy at the moment as it really is such a mismatch of players.

“I think he will be looking at the ones he can get rid of quickly, so Anthony Martial ticks that box if they can find a buyer.

“Paul Pogba would be another if the right offer came in and Luke Shaw surely has to go.

“If I were Martial I would want to leave anyway. He must look at Jose and think he doesn't trust me.

GETTY

Man Utd boss Jose Mourinho will look to strengthen again this summer

“Marcus Rashford might contemplate it but being from the youth set-up I think he'll stay.

“Juan Mata might also head back to Spain.

“There's probably over £200m of players there, then with that budget he's got options, but I honestly don't know who he goes after as his style is old-fashioned and top-class players would be put off by the way they play.”